CVE-2026-86296 D-Link DIR-822A udhcpcd serverpacket.c strcpy stack-based overflow
A remote stack-based buffer overflow in the D-Link DIR-822A udhcpcd component allows attackers to execute arbitrary code or cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-86296?
CVE-2026-86296 is a critical memory corruption vulnerability in D-Link DIR-822A, published on 7 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was determined in D-Link DIR-822A A_101. This vulnerability affects the function strcpy of the file udhcpcd/serverpacket.c of the component udhcpcd. This manipulation causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized.
Which versions are affected by CVE-2026-86296?
How do I fix CVE-2026-86296?
No fix has been published for CVE-2026-86296 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-86296 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86296 exists.
Sources
Also known as GHSA-f64f-9c4r-2xmc.